The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2015
Filed:
May. 17, 2011
Julien Hernandez, Antony, FR;
Emmanuel Rohart, Amiens, FR;
Rui Jorge Coelho Marques, Paris, FR;
Deborah Jane Harris, Manchester, GB;
Clare Jones, Liverpool, GB;
Julien Hernandez, Antony, FR;
Emmanuel Rohart, Amiens, FR;
Rui Jorge Coelho Marques, Paris, FR;
Deborah Jane Harris, Manchester, GB;
Clare Jones, Liverpool, GB;
RHODIA OPERATIONS, Paris, FR;
MAGNESIUM ELEKTRON LIMITED, Salford, GB;
Abstract
A composition based on cerium, zirconium and tungsten is described. The composition has a content expressed as an oxide, of which cerium is from 5% to 30% of the composition, tungsten is from 2% to 17% of the composition, and the remainder of the composition is zirconium. After aging at 750° C. under an air atmosphere including 10% water, it has a two-phase crystallographic structure having a tetragonal zirconia phase and a monoclinic zirconia phase, with no presence of a crystalline phase including tungsten. The composition can be used as a catalyst, especially in an SCR process.